Improvement in construction of vessels



UNITED STATES PATENT OFFICE.

ADAM WINGARD, OF SAN FRANCISCO, CALIFORNIA.

IMPROVEMENT IN CONSTRUCTION OF VESSELS.

Specification forming part of Letters Patent No. 119,488, dated October3, 1871..

To all whom it may concern:

- Be it known that I, ADAM WINGARD, of the city and county of SanFrancisco, State of California, have invented Improvements in theConstruction of Vessels; andl do hereby declare the following`description and accompanying drawing are sufficient to enable any personskilled in the art or science to which it most nearly appertains to makeand use my said invention or improvements without further invention orexperiment.

My invention relates to improvements in the construction of the hulls orbodies of sea-going and river vessels, in order to admit of theirattaining a high rate of speed, and at the same time preserve all theharmony of outline of our finest ships with equal carrying capacity.

In order to attain the advantage of a high rate of speed I employ thefiat-bottom or scow-shaped hull, and by a peculiar construction of thebow and stern I am able to obviate the faults and secure the advantagesof this construction of vessels.

In order to explain my invention, reference is had to the accompanyingdrawing forming a part of this specification, in whichf Figure lis alongitudinal section. Fig. 2 is a bottom View. Fig'. 3 is an end view.

A represents the hull or body of any vessel. The bottom B of this hullis made flat, and the ends are rounded from the bottom toward both theprow and stern, at each end, in the usual manner, thus giving ahorizontal wedge as a resisting surface to the progress of the vessel,and a following incline to clear the water from underneath the iiat hullat the rear. At each end of this hull I provide two pointed ends, c d ef, one being placed at each quarter ofthe vessel. These pointed ends areconstructed upon sharp lines, as shown, and gradually widen as theyadvance toward the center ofthe hull until they merge into the flatbottom on the same plane. The lines v upon which these bows orcut-waters unite with the horizontal wedge of the bottom are rounding,thus forming an incline channel with circular bottom between them, whichcontracts and grows more shallow as it approaches toward the middle ofthe bottom. The incline at the fore end of the ship is longer and moregradual than at the stern, and the cut-waters are, consequently, ofgreater length. The sides of the hull are built upon regular lines, s'oas to give the least resistance pos sible to the progress of the ship.

rFhe advantages in thus constructing the hulls of vessels may be summedup as follows: The double bows serve to cleave the water, and instead ofthrowing it to the outside to heap itself up against the side ofthevessel, and by burying' it to an unusual depth retard its progress, turnit on easy lines similar to the action of the moldboard of a plow, anddirect it through the channel between the pointed ends under the bottomof the boat, where they serve to buoy it up and thus materially aid theforward motion of the vessel. IIhe same construction of the rear endenables the water thus directed beneath the vesel to clear itself freelythrough the channel be sween the bows cf. Besides this, I am able togreatly increase the width of beam of the vessel and retain its sharplines, so that its progress in the water will not be materiallydiminished, as would be the case with a vessel of the ordinaryconstruction.

Having thus described my invention, what I claim, and desire to secureby Letters Patent, 1s-

The flat bottom B, in combination with the double-pointed ends c d c fand concavities D and E, as described.

In witness whereof I have hereunto set my hand and seal.

ADAM WINGARD. [L. s] Witnesses:

WM. H. RUNNELs, I. L. BOONE. (98)

